It is one type of end-fire array and based on the dipole element. It is comprised of a set of dipole and dipole elements vary in size from smallest at the front to largest at the rear. A balanced feedline is connected to the narrow end, and power is fed to the other dipoles via a network of crossed connections. This arrangement creates an active region of adjacent dipoles that accepts power at any given frequency.

Because it's characteristic of closely matches the 377 ohms impedance of free space, therefore it contribute to its efficiency. This type of antenna has a linear polarization and its typical gain is between 6 to 8 dB. LPDA also has a frequency limit of 30 MHz until 1.8 GHz. The antenna is constructed of aluminium to minimize weight and reduce windloading. This antenna also takes advantages of its relatively high front-to-back gain ratio. Log-periodic dipole array is most commonly used for television reception. LPDA also used in radio reception because LPDA tend to have more uniform gain over the FM band and wider beamwidths.